[Bug c++/42609] [4.5 regression] undesired operation when working with mno-cygwin

[davek at gcc dot gnu dot org]

------- Comment #3 from davek at gcc dot gnu dot org  2010-04-01 01:11 -------
I figure this is worth fixing in the ~22-hour window remaining before 2nd
April.  The option although deprecated should not for preference be released in
a broken state, and since it worked in all previous versions (i.e. before I
added the libstdc++ wrappers) this is a regression.  The fix should be really
really trivial:

Index: gcc/config/i386/cygwin.h
===================================================================
--- gcc/config/i386/cygwin.h    (revision 157789)
+++ gcc/config/i386/cygwin.h    (working copy)
@@ -108,7 +108,7 @@ along with GCC; see the file COPYING3.  If not see
 #define CXX_WRAP_SPEC_OPT "muse-libstdc-wrappers"
 #endif

-#define CXX_WRAP_SPEC "%{" CXX_WRAP_SPEC_OPT ":" CXX_WRAP_SPEC_LIST "}"
+#define CXX_WRAP_SPEC "%{!mno-cygwin:%{" CXX_WRAP_SPEC_OPT ":"
CXX_WRAP_SPEC_LIST "}}"

 #else /* !defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)  */


I'll set the bootstrap going now.  That'll leave me some time to test it this
coming lunchtime/afternoon/evening (UK time) and check it in long before
midnight.

Richard G., please speak up if you have any objection to this plan, if I
haven't heard anything from you by a few hours before the midnight deadline
I'll assume you're ok with it.


-- 

davek at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org
      Known to fail|                            |4.5.0
      Known to work|                            |4.4.0
            Summary|undesired operation when    |[4.5 regression] undesired
                   |working with mno-cygwin     |operation when working with
                   |                            |mno-cygwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609